eRTG system

Savings through VAHLE eRTG

since 2011


liters of diesel


kilograms of CO2

The eRTG system consists of an electric telescopic arm with a current collector trolley that enables automatic retraction and extension into the conductor rail system. The system is available in two versions. The "2+2" version features two conductor systems next to each other, while the Trimotion version features four conductor systems in a row

Both systems have sensors to ensure automatic retraction/extension and steering. A synchronization unit allows seamless switching from diesel power to mains power.


  • Compact and lightweight design
  • Easy installation and commissioning (plug and play)
  • Suitable for operating temperatures from -30°C to +50°C
  • Can be combined with data and positioning systems
  • Compatible with PROFINET and PROFIsafe
  • Low wear and low maintenance
  • Automatic control
  • Automatic connection to the power supply


Technical data - busbar
Rated current up to 1000 A
Rated voltage AC 400 - 1000 V
Number of poles 4
Conductor material Aluminum-stainless steel
Technical data - telescopic arm
Stroke length up to 1700 mm
Vertical tolerance ± 150 mm
Tolerance in all directions
Technical data - system
Conductor system height above the ground 1800 - 2600 mm
Operating temperature -20 °C to +50 °C
Relative humidity max. 100 %




  • Plant project planning and consulting
  • Voltage drop calculations with determination of the feed-in for realization of the lowest voltage drop
  • Installation plan preparation
  • Installation and commissioning
  • Remote support, maintenance, repair and inspections
  • Modernization of existing plants (retrofit)
  • Multi-level training possibilities
  • Start-up/shift support
  • Accompaniment of the customer in problem finding and solving